EXCITATION TRANSFER AND QUENCHING OF THE N = 3 EXCITED STATES OF HELIUM IN A LOW-PRESSURE GLOW DISCHARGE B. Dubreuil et A. Catherinot. J. Phys. Colloques, 40 C7 (1979) C7-5-C7-6 DOI: 10.1051/jphyscol:1979702